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2011
nissan altima27 views

Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2011 nissan altima Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
easy$50-$100
Replace faulty spark plugs to address misfire and rough idle issues.
Source: https://www.nissanclub.com/threads/rough-idle-2011-nissan-altima.525617/

Repair Steps:

  1. Purchase the correct spark plugs for the 2011 Nissan Altima.
  2. Remove the engine cover and locate the spark plugs.
  3. Carefully remove the old spark plugs using a spark plug socket.
  4. Install new spark plugs and tighten them to the manufacturer's specifications.
  5. Reattach the engine cover.
2
medium$100-$200
Inspect and repair any vacuum leaks in the intake system.
Source: https://www.altimaforums.net/threads/misfire.56391/

Repair Steps:

  1. Use a vacuum gauge to test for leaks by attaching it to a full vacuum source.
  2. Identify any hissing sounds or drops in vacuum pressure indicating a leak.
  3. Inspect hoses and connections for cracks or disconnections.
  4. Replace or repair any damaged hoses or connections.
  5. Re-test the system to ensure the leak is resolved.
3
medium$20-$50
Clean the throttle body to improve idle stability.
Source: https://www.justanswer.com/nissan/58cd9-nissan-datsun-altima-s-2011-nissan-altima-2-5-s-noticing.html

Repair Steps:

  1. Purchase throttle body cleaner from an auto parts store.
  2. Remove the air intake duct to access the throttle body.
  3. Spray the throttle body cleaner onto a clean cloth and wipe the throttle bore and plate.
  4. Ensure all carbon deposits are removed.
  5. Reattach the air intake duct and test the engine for improved idle.
4
medium$100-$300
Check and replace faulty ignition coils if necessary.
Source: https://shop.advanceautoparts.com/r/advice/car-maintenance/common-problems-of-the-nissan-altima-and-how-to-fix-them

Repair Steps:

  1. Use an OBD-II scanner to identify misfire codes related to specific cylinders.
  2. Locate the ignition coils on the engine.
  3. Remove the faulty ignition coil by disconnecting the electrical connector and unscrewing the coil.
  4. Install a new ignition coil and reconnect the electrical connector.
  5. Clear any error codes using the OBD-II scanner and test the vehicle.

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